Date: Wed, 8 Feb 2012 13:26:33 -0600 (CST) From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us> To: Tom Vier <nester@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: zfs checksums on non-raidz Message-ID: <alpine.GSO.2.01.1202081324090.21595@freddy.simplesystems.org> In-Reply-To: <20120208184728.GH6814@zero> References: <20120208184728.GH6814@zero>
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On Wed, 8 Feb 2012, Tom Vier wrote: > In mirror and single dev zpools, are data and metadata still checksummed, or > only when using raidz? Checksums are done at the decoded/reassembled filesystem block level (e.g. 128K) so they are performed regardless of the underlying storage topology or compression used. Checksums are still in effect even if there is no data redundancy. Bob -- Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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